Windows 10: Cannot update windows: Download error - 0x800700c1

2024-07 Cumulative Update Preview for Windows 11 Version 23H2 for x64-based Systems KB5040527This update keeps giving me the download error listed in the title. I've run it through the Windows update troubleshooter multiple times, and nothing unusual happens. Whenever I try to "Retry all" updates, it just gives me the "Updates failed" screen.

:)

 

Error 0x800700c1 in windows 10

I have got the error 0x800700C1 and could not update KB3115259, KB3167685, KB3163018 & KB3149135 since a week ago. I tried both you two methods but the result was the same. I don't wish to follow hbja to go back to "Factory Setting". Can you help me sort
it out with other solutions?

 

Windows 10 Updates still not taking (Error 0x800700c1)

Steps 1-3 completed, on Step 4: no pop-up box with Defer upgrades option.

There was a drop-down box for "Notify to schedule restart" (this was selected) and another for "Automatic." I changed to Automatic and attempted to download and install upgrades again. No luck. I also followed the link to the Microsoft Update Catalog to
manually download and install Updates.

Update for Windows 10 Version 1511 for x64-based Systems (KB3181403) - Error 0x800700c1

-downloaded, did not install.

Security Update for Windows 10 Version 1511 for x64-based Systems (KB3172729) - Error 0x800700c1

-showed the following:





Security Update for Adobe Flash Player for Windows 10 Version 1511 (for x64-based Systems) (KB3202790) - Error 0x800700c1

-downloaded but did not install

Cumulative Update for Windows 10 Version 1511 for x64-based Systems (KB3198586) - Error 0x800700c1

-downloaded but did not install

 

Error 0x800700c1 in windows 10

Hi,

Thank you for posting your query on Microsoft Community.

Share this information to assist you better.

• Which build is currently installed in your computer?
• Do you have any anti-virus program installed?

The error code 0x800700C1 occurs because the Windows Authenticode Signature Verification function now verifies portable executable (PE) files.

I suggest you to follow the methods below and check if you can install the updates:

Method 1: Run Windows Update Troubleshooter

I suggest you to run the Windows Update Troubleshooter. Follow these steps to run Windows Update
troubleshooter:

• Press Windows key + W and type
  troubleshooting.
• Select Troubleshooting.
• Select View all on the top left corner.
• Click Windows Update troubleshooter.
• Follow the on-screen instructions to run the troubleshooter.
• Check if issue persists.

If the issue persists, follow next method.

Method 2:

I suggest you to check if the services responsible for Windows update is running. Refer to these steps:

• Press Windows key +R, type “services.msc”
• Locate the BITS, Cryptographic, MSI Installer
  and the Windows Update Services and check if it is running.
• If not, right click on the service and click start to start the service.

Hope this helps, let us know the status of the issue. We will assist you further.